Noah's Ark is a very interesting silent/talking movie, particularly for its cast and crew involved as well as it's climatic flood sequence. Michael Curtiz (the director), Darryl F. Zanuck (who penned the script), John Wayne, and Myrna Loy would all go on to greater fame in the years following...
A Criterion blu-ray of Cecil B. DeMille's The King of Kings (1927) would be nice. Also, The Sign of the Cross (1932) and the The Crusades (1935) would be welcome as well.